Start up issues
08-25-2015, 09:42 AM
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Start up issues Having some issues getting my swap started, hopefully someone will chime in wit something I haven't thought of.
6.0 swap with 0411 with startup tune, factory harness re worked, stock truck injectors, ls6 intake, stock tb, headers, 3" x pipe into magnaflows. A1000 regulator set to 60psi. When I initially tried to start my motor with a set of gt500 inejctors,it started right up and ran for 10-15 seconds, it would pop and back fire terrible and die out. It was very hard to start It was suggested that I put the stock ones back in as maybe the bigger injectors were dumping too much fuel in. I cleaned and put stock truck injectors back in, and still doing the same thing. I obtained another ecu with a verified start up tune on it. Still wanting to pop while trying to start up. It will start and run for a few seconds, but almost immediately die out. I have verified with a noid light that the injectors are receiving their signal, as well as spark on all 8 cylinders. It does have ls1/6 coils with msd wires. Any suggestions on where to look for a remedy. It is not throwing any codes, and each bank of injectors/coils have a dedicated switch +12v on a 10 amp fuse. Thanks for any help to get my junk running..lol
6.0 swap with 0411 with startup tune, factory harness re worked, stock truck injectors, ls6 intake, stock tb, headers, 3" x pipe into magnaflows. A1000 regulator set to 60psi. When I initially tried to start my motor with a set of gt500 inejctors,it started right up and ran for 10-15 seconds, it would pop and back fire terrible and die out. It was very hard to start It was suggested that I put the stock ones back in as maybe the bigger injectors were dumping too much fuel in. I cleaned and put stock truck injectors back in, and still doing the same thing. I obtained another ecu with a verified start up tune on it. Still wanting to pop while trying to start up. It will start and run for a few seconds, but almost immediately die out. I have verified with a noid light that the injectors are receiving their signal, as well as spark on all 8 cylinders. It does have ls1/6 coils with msd wires. Any suggestions on where to look for a remedy. It is not throwing any codes, and each bank of injectors/coils have a dedicated switch +12v on a 10 amp fuse. Thanks for any help to get my junk running..lol
08-25-2015, 10:01 PM
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What cam? Stock tune on a large cam will run eyes bleeding rich due to low VE at idle compared to stock cam. Might also be worth unplugging maf if you haven't already.
I trolled hp tuners repository for a similar setup as mine for the start up. That could be worth a try slso
I trolled hp tuners repository for a similar setup as mine for the start up. That could be worth a try slso